Gregory Chediak, MD

Primary specialty

Hospitalist PhysicianTaxonomy code 208M00000X

License

04-26872 Issued in KS

Practice address

1500 SW 10TH Ave
Topeka, KS 66604-1301

Phone

(785) 354-5242

Fax

(785) 354-6349

NPI assigned

Mar 21, 2006

Last updated

Oct 7, 2026By the provider in NPPES

Sex

Male

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 2

Addresses

Electronic endpoints 2

Medicare fee-for-service enrollment

Enrolled in KS

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: No
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

Specialty

Hospitalist

Education

University of Oklahoma College of Medicine, 1989

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Cotton-O'Neil Clinic Revocable TrustGroup PAC ID 5496659195, 659 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Phoenix Home Care and Hospice Hospice, Overland Park, KS, CCN 171601
• Stormont Vail Hospital Hospital, Topeka, KS, CCN 170086

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: gchediak1798@stormontvaildirect.org

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• Cotton-O'Neil Clinic Revocable Trust

  dba Cotton O'Neil

  • Internal Medicine Physician
  • Topeka, KS
  • NPI 1811944457
  Medicare reassignment Care Compare group NPD
• Stormont Vail Health Flint Hills LLC

  dba Stormont Vail Health Flint Hills

  • Emergency Medicine Physician
  • Junction City, KS
  • NPI 1447968128

  Internal Medicine

  Medicare reassignment NPD
• Cotton-O'Neil Clinic Revocable Trust

  dba Stormont Vail Health DME

  • Durable Medical Equipment & Medical Supplies
  • Topeka, KS
  • NPI 1700076015
  NPD
• Stormont Vail Health Flint Hills LLC

  dba Stormont Vail Health Flint Hills Lab

  • Clinical Medical Laboratory
  • Junction City, KS
  • NPI 1174308068
  NPD
• Internal Medicine Associates LLC

  • Internal Medicine Physician
  • Emporia, KS
  • NPI 1285688952
  NPD (past)
• Stormont-Vail Healthcare Inc

  dba Stormont Vail Hospital

  • General Acute Care Hospital
  • Topeka, KS
  • NPI 1194782409
  NPD (past)

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• Essential Home Health, LLC

  dba Phoenix Home Care & Hospice

  • Community Based Hospice Care Agency
  • Overland Park, KS
  • NPI 1295113637
  Care Compare affiliation
• Stormont-Vail Healthcare Inc

  dba Stormont Vail Hospital

  • General Acute Care Hospital
  • Topeka, KS
  • NPI 1194782409
  Care Compare affiliation

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1142899200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1791331200000",
    "number": "1902865769",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1500 SW 10TH AVE",
            "city": "TOPEKA",
            "state": "KS",
            "postal_code": "666041301",
            "telephone_number": "785-354-5242",
            "fax_number": "785-354-6349"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1500 SW 10TH AVE",
            "city": "TOPEKA",
            "state": "KS",
            "postal_code": "666041301",
            "telephone_number": "785-354-5242",
            "fax_number": "785-354-6349"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1102 Saint Marys Rd",
            "address_purpose": "LOCATION",
            "city": "Junction City",
            "state": "KS",
            "postal_code": "664414139",
            "country_code": "US",
            "telephone_number": "785-238-0325",
            "fax_number": "785-576-1113",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "CHEDIAK",
        "first_name": "GREGORY",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-03-21",
        "last_updated": "2026-10-07",
        "certification_date": "2026-10-07",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "KS",
            "license": "04-26872",
            "primary": false
        },
        {
            "code": "208M00000X",
            "taxonomy_group": "",
            "desc": "Hospitalist",
            "state": "KS",
            "license": "04-26872",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "gchediak1798@stormontvaildirect.org",
            "affiliation": "Y",
            "endpointDescription": "SVH Secure Messaging",
            "affiliationName": "STORMONT-VAIL HEALTHCARE INC",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "CCDA",
            "address_1": "1500 SW 10th Ave",
            "city": "Topeka",
            "state": "KS",
            "country_code": "US",
            "postal_code": "666041301",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "gchediak1798@stormontvaildirect.org",
            "affiliation": "Y",
            "endpointDescription": "SVH Secure Messaging",
            "affiliationName": "COTTON O'NEIL CLINIC REVOCABLE TRUST",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "CCDA",
            "address_1": "1500 SW 10th Ave",
            "city": "Topeka",
            "state": "KS",
            "country_code": "US",
            "postal_code": "666041301",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Kaitlinn D Chase
• Matthew J Chavez
• Melissa J Chavez, LSCSW
• Ramon Luis Chavez
• Romualdo Ray Chavez
• Margo Chediak, PA-C
• Chu-CHI Chen, M.D.
• Lynne H Chen, APRN
• Chester R Davis MD PA
• Jori Childs, AUD

• Hospitalist Physician in Topeka, KS
• Providers in Topeka, KS by specialty
• Hospitalist Physician in Kansas

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 7, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.